Sol_140P2026R0009_Amd_0004.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7.ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Rachel Dyer

See continuation page

NPS, DSC Contracting Services Div 1 Denver Federal Center, Building 50 P.O. Box 25287 Denver CO 80225-0287

DOI, NPS, DSC Contracting Services 1 Denver Federal Center, Building 50 P.O. Box 25287 Denver CO 80225-0287

PDS

PDS

140P2026R0009

12/16/2025

11/17/2025

1 9

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

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UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

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(C)

NSN 7540-01-152-8067

140P2026R0009/0004

THE PURPOSE OF THIS AMENDMENT 0004 IS TO ANSWER

QUESTIONS ASKED BY THE CURRENT MARKET

INDUSTRY.

QUESTION 1. The period of performance is approx. 2 years and 9 months, however the working days reflect 500 calendar days. Which timeframe is to be considered for this project?

ANSWER 1. Period of Performance is 500 calendar days.

QUESTION 2. Can fallen trees be moved off trail, or do they need to be removed from the site?

ANSWER 2. Fallen trees may be left in the woods, provided that the trees are limbed appropriately to prevent hazardous protrusions and minimize visual impact. If multiple trees are fallen in the same area, the contractor must clear or arrange them as required to preserve an acceptable site appearance and minimize visual impact. Additionally, any trees that are fallen directly onto the trail or those that have fallen from the ledge on the high side of the trail should be removed entirely.

QUESTION 3. What is the required course of action if cleaning a slip area causes a large amount of material located above it to become loose or unstable?

ANSWER 3. If material becomes loose or unstable, the Contractor must immediately notify the Contracting Officer's Representative

(COR). Any mitigation required beyond the original scope of construction shall be addressed as an unforeseen site condition.

QUESTION 4. Can a compost filter sock be used as an approved substitute for the silt fence specified in the contract documents?

ANSWER 4. Composite Filter Sock is acceptable in areas not suitable for Silt Fence. All

Continued...

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C) materials will need to be submitted for approval through the submittal process.

Locations where contractor plans to use

Composite Filter sock will need to be coordinated and approved by the Contracting

Officer's Representative.

QUESTION 5. If an existing tree is obstructing required access for construction activities, are we permitted to remove it? If removal is not allowed, please advise on the acceptable alternative.

ANSWER 5. All tree removal to be in compliance with Specification Section 31 11 00 - Clearing and Grubbing. Specifically section 3.6:

"A. Remove obstructions, trees, shrubs, and other vegetation to permit installation of new construction. 1. No trees over 3 inches DBH will be cut from April 1 to November 15."

QUESTION 6. Price Schedule Line Item 14 (Option

1 - Structural Concrete Repair C1) Unit of

Measure is Lump Sum (LS). Spec Section 01 27

00-3 states "Measurement for payment will be

Square Feet (SF). Please confirm if Price

Schedule Line-Item Unit of Measure should be

Square Feet.

ANSWER 6. Price Schedule Line-Item Unit of

Measure should be Lump Sum (LS)

QUESTION 7. Price Schedule Line Item 15 (Option

2 - Structural Concrete Crack Repair C2) Unit of Measure is Lump Sum (LS). Spec Section 01

27 00-3 states "Measurement for payment will be

Linear Feet (LF). Please confirm if Price

Schedule Line-Item Unit of Measure should be

Linear Feet.

ANSWER 7. Price Schedule Line-Item Unit of

Measure should be Lump Sum (LS)

QUESTION 8. Price Schedule Line Item 16 (Option

3 - Point & Patch Masonry Joints) Unit of

Measure is Lump Sum (LS). Spec Section 01 27

00-4 states "Measurement for payment will be

Linear Feet (LF). Please confirm if Price

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

Schedule Line-Item Unit of Measure should be

Linear Feet.

ANSWER 8. Price Schedule Line-Item Unit of

Measure should be Lump Sum (LS).

QUESTION 9. Price Schedule Line Item 17 (Option

4 - Rivet Replacement) Unit of Measure is Lump

Sum (LS). Spec Section 01 27 00-4 states

"Measurement for payment will be Each (LF).

Please confirm if Price Schedule Line-Item Unit of Measure should be Linear Feet.

ANSWER 9. Price Schedule Line-Item Unit of

Measure should be Lump Sum (LS).

QUESTION 10. Price Schedule Line Item 13 states

Wooden Benches. Spec Section 32 33 00-3 states

"Steel" park bench. Please clarify. 2.1

IN-GROUND MOUNTED HEAVY-DUTY PARK BENCH; A.

Summary

1. Steel Park bench designed for outdoor public spaces.

2. Constructed from heavy-duty, weather-resistant materials for durability.

3. Finished in NPS Brown polyester powder coating for corrosion resistance and durability.

ANSWER 10. Contractor provided benches are to comply with the Spec Section 32 33 00.

QUESTION 11. Can the Project Manager dual hat as the Quality Control Manager?

ANSWER 11. No, Dual Hat of Project Manager and

Quality Control Manager is not permissible.

QUESTION 12. Can the Construction Schedule be submitted in Primavera format for the Technical

Proposal, since the Specifications allow the schedule to be in Primavera format? 01 32 16 -

3 > 2.2 CONSTRUCTION SCHEDULE REQUIREMENTS > F

> 1 > Use latest version of Microsoft Project, Primavera, Project Planner, SuretTrak or approved equal for (Windows 7 and newer.)

ANSWER 12. Construction Schedule may be

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C) submitted in a Primavera format. Schedule should be submitted as a pdf file.

QUESTION 13. Is dual hat allowed for any site personnel positions?

ANSWER 13. Dual Hat of Quality Control Manager and Safety Manager may be permissible. Dual

Hat personnel need to be approved by the

Contracting Officer and must meet qualifications and experience for both positions.

QUESTION 14. Please discuss with the NPS

Project Team and give serious consideration to extending the NERI Rend Trail and Bridges bid due date until mid-January 2026. With the timeline for the NPS to respond to the RFI's, contractors to solidify pricing of critical long lead items and end of the year vacation/holidays, extending the bid due date

30 days would seem realistic.

ANSWER 14. Due Date was extended to January 8th with the issuance of Addendum 3 on December

16th.

QUESTION 15. At Bridge 2, the details for the transverse beam call for W6x25 on sheet 69 for the typical detail but the plans show a W10x30 in the details on sheet 70. Bridges 2 thru 5 all show this same conflict. Please clarify what steel is to be used for the transverse beams on Bridges 2-5.

ANSWER 15. W6x25 is the correct beam size for bridges 2-5.

QUESTION 16. Material Selection for Spec

Section 055300 Part 2.2.A:

Based on industry feedback, there are no known aluminum grating systems capable of meeting the stated vehicle loading requirement of H-10

(10-ton truck load). Vendors have confirmed that aluminum grating systems are generally not designed for this level of loading.

Will the Government allow bidders to propose an

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

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AMOUNT

(F)

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ITEM NO.

(A)

QUANTITY

(C) alternative material that can meet the loading requirement (e.g., steel grating or other suitable material)?

ANSWER 16. Manufacturer is Ohio Grating;

however, the salient characteristics shall be brand name or equal and met regardless of manufacturer.

QUESTION 17. Bridge Load Restrictions and

Construction Sequencing - The specifications indicate that all five existing bridges must be rehabilitated prior to crossing with construction equipment and that post-rehabilitation loads are limited to H-10 or 20,000 lbs, with only one vehicle permitted on a bridge at a time. Please confirm whether temporary construction means such as matting, temporary shoring, or alternative access methods will be permitted to facilitate rehabilitation activities, or if all work must be completed without any equipment crossings until final bridge rehabilitation is complete.

ANSWER 17. Alternative methods as required for construction use is permissible and falls within contractor's means and methods. These former railroad bridges have not been assessed for current load ratings.

QUESTION 18. Mechanically Stabilized Earth

(MSE) Wall Design Responsibility - The contract documents include replacement of multiple timber cribbing walls with mechanically stabilized earth walls, along with wall design parameters shown in the drawings. Please confirm whether the Contractor is responsible for full delegated design, including stamped calculations and shop drawings, for all MSE walls, or if the intent is for the Contractor to construct to prescriptive details provided in the contract documents. See Specification

Section 31 35 19 - Submittal Requirements: The

Contractor shall submit wall plans to the

Contracting Officer at least 30 days prior to the start of wall excavation. The plan shall outline the methods and equipment to be used to excavate and construct the planned Engineered

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

Wrap-Faced Vegetated walls. These plans shall be prepared by the manufacturer and stamped by a registered West Virginia Professional

Engineer.

ANSWER 18. See Specification Section 31 35 19 -

Submittal Requirements: The Contractor shall submit wall plans to the Contracting Officer at least 30 days prior to the start of wall excavation. The plan shall outline the methods and equipment to be used to excavate and construct the planned Engineered Wrap-Faced

Vegetated walls. These plans shall be prepared by the manufacturer and stamped by a registered

West Virginia Professional Engineer.

QUESTION 19. Temporary Structural Supports for

Bridge Rehabilitation - Division 13 includes

Section 13 99 97 ¿ Temporary Structural

Supports. Please clarify whether temporary shoring, falsework, or support systems for bridge deck replacement and bearing block replacement are considered fully

Contractor-designed means and methods, or if there are specific limitations or preapproved concepts required by the National Park

Service.

ANSWER 19. Temporary structures are the contractor's responsibility.

QUESTION 20. Environmental Permitting and NPDES

Coverage - The General Notes indicate the

Contractor is responsible for obtaining NPDES permit coverage from the West Virginia

Department of Environmental Protection. Please confirm whether the project is anticipated to fall under a general permit or if an individual permit is required, and whether any prior environmental studies or permit coordination documents are available to assist bidders.

ANSWER 20. Which permit is required is based on the contractors means and methods and the responsibility of Contractor as per the FAR

52.236-7 Permits and Responsibilities which

"mandate that federal contractors must obtain all necessary licenses and permits and comply

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C) with all applicable laws (federal, state, local) at their own expense, without additional cost to the government."

QUESTION 21. Trail and Trailhead Closure

Duration - The specifications state that the

Rend Trail and trailhead areas will be closed during construction. Please clarify whether the closure is expected to be continuous for the duration of the project or if phased reopening of completed segments or trailheads will be permitted or encouraged.

ANSWER 21. Trail closure will be continuous for the duration of the project.

QUESTION 22. Request for Bid Date Extension -

In addition to the technical questions listed above, we respectfully request consideration of a two-week extension to the proposal due date.

ANSWER 22. Due Date was extended to January 8th with the issuance of Addendum 3 on December

16th.

QUESTION 23. Do the AASHTO 270m grade 50 structural steel components get painted or a coating? The only reference to coatings are for the hardware.

ANSWER 23. No

QUESTION 24. The rough carpentry spec 06 10

00-2 calls out the timber material to be

Southern Yellow Pine Grade No. 2 or better, FOHC whereas Sheet 101 (Sub Sheet 06C 001) calls out the timber to be #2 (or better grade)

SYP. Can this material be supplied as FOHC?

It is nearly impossible to procure large quantities of FOHC SYP lumber/timber.

ANSWER 24. FOHC will not be required, material should be southern Yellow Pine Grade No. 2 or better.

QUESTION 25. Is the treatment retention required per AWPA standards to be UC4A or

UC4B?

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

ANSWER 25. All pressure-treated wood in contact with the ground or exposed to weather must be

UC4B minimum.

THE LAST DAY FOR QUESTIONS TO BE SUBMITTED IS

DECEMBER 31, 2025, BY 9AM MT.

ALL OTHER TERMS AND CONDITIONS HEREBY REMAIN

UNCHANGED.

Sponsored by GSA FAR (48 CFR) 53.110